One of the creatures made up for the film's universe is the Vultusaurus, a dinosaur that developed bat-like wing membranes to fly. Some scientists scoffed at the idea and criticized it for being unscientific, since actual flying dinosaurs (birds and close relatives) use feathers to fly, and wing membranes were unheard of in any dinosaur lineage. Yet in 2015, the small gliding dinosaur Yi qi was described from China, which really did evolve bat-like "wings" made up of skin that extended between its elongated fingers. However, unlike the purely fictional, bare-skinned Vultusaurus, Yi qi's body was covered in feathers, as it was closely related to birds.

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